<template>
  <div>
    <h1>Hello</h1>
    <h2>{{count}}</h2>
  </div>
</template>

<script>
import PubSub from 'pubsub-js'
export default {
    name:'Hello',
    data(){
        return {
            count:0
        }
    },
    mounted(){
        PubSub.subscribe('count',(_,count) => {
            this.count = count
        })
    }
}
</script>

<style>

</style>